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Paper Abstract and Keywords
Presentation 2009-09-29 13:25
Characteristics of Mode-Coupling Single Phase Drive LiNbO3 Ultrasonic Motor Depended on Length to Width Ratio of the Stator Vibrator
Hideki Tamura (Yamagata Univ.), Manabu Aoyagi (Muroran Inst. of Tech.), Yasuhiro Yamayoshi (Yamagata Univ.), Takehiro Takano (Tohoku Inst. of Tech.), Seiji Hirose (Yamagata Univ.) US2009-39
Abstract (in Japanese) (See Japanese page) 
(in English) An internal coupling effect resulting from the crystal anisotropy of LiNbO$_3$ can be applied to a single phase driven ultrasonic motor. We have used the rectangular stator vibrator with the length-width ratio of W/L=0.255 to obtain the mode-coupling between the in-plane longitudinal 1st and flexural 2nd modes. The rotation direction can be changed by selecting one of the two coupling-modes. However, big differences for vibration and motor characteristics exist between each coupling-mode. In this study, we inspect the motor design in another coupling condition of around W/L=0.8, and made trial motors using the stator vibrator of W/L=0.849. The new design of vibrator improved evenness of the electromechanical coupling factor between the modes. The motor which drives the rotor with a short-side of the stator shows that the rotation characteristics of both directions is similar in wide range of the preload force.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic motor / LiNbO$_3$ / Rectangular plate vibrator / Mode coupling / Crystal anisotropy / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 213, US2009-39, pp. 7-12, Sept. 2009.
Paper # US2009-39 
Date of Issue 2009-09-22 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US  
Conference Date 2009-09-29 - 2009-09-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Noboribetsu Grand Hotel 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To US 
Conference Code 2009-09-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characteristics of Mode-Coupling Single Phase Drive LiNbO3 Ultrasonic Motor Depended on Length to Width Ratio of the Stator Vibrator 
Sub Title (in English)  
Keyword(1) Ultrasonic motor  
Keyword(2) LiNbO$_3$  
Keyword(3) Rectangular plate vibrator  
Keyword(4) Mode coupling  
Keyword(5) Crystal anisotropy  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hideki Tamura  
1st Author's Affiliation Yamagata University (Yamagata Univ.)
2nd Author's Name Manabu Aoyagi  
2nd Author's Affiliation Muroran Institute of Technology (Muroran Inst. of Tech.)
3rd Author's Name Yasuhiro Yamayoshi  
3rd Author's Affiliation Yamagata University (Yamagata Univ.)
4th Author's Name Takehiro Takano  
4th Author's Affiliation Tohoku Institute of Technology (Tohoku Inst. of Tech.)
5th Author's Name Seiji Hirose  
5th Author's Affiliation Yamagata University (Yamagata Univ.)
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Speaker Author-1 
Date Time 2009-09-29 13:25:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2009-39 
Volume (vol) vol.109 
Number (no) no.213 
Page pp.7-12 
#Pages 6 
Date of Issue 2009-09-22 (US) 

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